common: compile libcommon as C++

[lttng-tools.git] / src / common / index-allocator.c

diff --git a/src/common/index-allocator.c b/src/common/index-allocator.c
deleted file mode 100644 (file)
index 8c73218..0000000
--- a/src/common/index-allocator.c
+++ /dev/null
@@ -1,131 +0,0 @@
-/*
- * Copyright (C) 2020 Francis Deslauriers <francis.deslauriers@efficios.com>
- *
- * SPDX-License-Identifier: GPL-2.0-only
- *
- */
-
-#include <inttypes.h>
-
-#include <urcu.h>
-#include <urcu/list.h>
-
-#include "macros.h"
-#include "error.h"
-
-#include "index-allocator.h"
-
-struct lttng_index_allocator {
-       struct cds_list_head unused_list;
-       uint64_t size;
-       uint64_t position;
-       uint64_t nb_allocated_indexes;
-};
-
-struct lttng_index {
-       uint64_t index;
-       struct cds_list_head head;
-};
-
-struct lttng_index_allocator *lttng_index_allocator_create(
-               uint64_t index_count)
-{
-       struct lttng_index_allocator *allocator = NULL;
-
-       allocator = zmalloc(sizeof(*allocator));
-       if (!allocator) {
-               PERROR("Failed to allocate index allocator");
-               goto end;
-       }
-
-       allocator->size = index_count;
-       allocator->position = 0;
-       allocator->nb_allocated_indexes = 0;
-
-       CDS_INIT_LIST_HEAD(&allocator->unused_list);
-
-end:
-       return allocator;
-}
-
-uint64_t lttng_index_allocator_get_index_count(struct lttng_index_allocator *allocator)
-{
-       return allocator->nb_allocated_indexes;
-}
-
-enum lttng_index_allocator_status lttng_index_allocator_alloc(
-               struct lttng_index_allocator *allocator,
-               uint64_t *allocated_index)
-{
-       enum lttng_index_allocator_status status =
-                       LTTNG_INDEX_ALLOCATOR_STATUS_OK;
-
-       if (cds_list_empty(&allocator->unused_list)) {
-               if (allocator->position >= allocator->size) {
-                       /* No indices left. */
-                       status = LTTNG_INDEX_ALLOCATOR_STATUS_EMPTY;
-                       goto end;
-               }
-
-               *allocated_index = allocator->position++;
-       } else {
-               struct lttng_index *index;
-
-               index = cds_list_first_entry(&allocator->unused_list,
-                               typeof(*index), head);
-               cds_list_del(&index->head);
-               *allocated_index = index->index;
-               free(index);
-       }
-
-       allocator->nb_allocated_indexes++;
-end:
-       return status;
-}
-
-enum lttng_index_allocator_status lttng_index_allocator_release(
-               struct lttng_index_allocator *allocator, uint64_t idx)
-{
-       struct lttng_index *index = NULL;
-       enum lttng_index_allocator_status status =
-                       LTTNG_INDEX_ALLOCATOR_STATUS_OK;
-
-       LTTNG_ASSERT(idx < allocator->size);
-
-       index = zmalloc(sizeof(*index));
-       if (!index) {
-               PERROR("Failed to allocate free index queue");
-               status = LTTNG_INDEX_ALLOCATOR_STATUS_ERROR;
-               goto end;
-       }
-
-       index->index = idx;
-       cds_list_add_tail(&index->head, &allocator->unused_list);
-       allocator->nb_allocated_indexes--;
-
-end:
-       return status;
-}
-
-void lttng_index_allocator_destroy(struct lttng_index_allocator *allocator)
-{
-       struct lttng_index *index = NULL, *tmp_index = NULL;
-
-       if (!allocator) {
-               return;
-       }
-
-       if (lttng_index_allocator_get_index_count(allocator) > 0) {
-               WARN("Destroying index allocator with %" PRIu64
-                               " slot indexes still in use",
-                               lttng_index_allocator_get_index_count(allocator));
-       }
-
-       cds_list_for_each_entry_safe(index, tmp_index,
-                       &allocator->unused_list, head) {
-               cds_list_del(&index->head);
-               free(index);
-       }
-
-       free(allocator);
-}